target-cris: Build fix for debug output

Around r3361 (81fdc5f8d2d681da8d255baf0713144f8656bac9) env->debug1 used
to contain the address of an MMU fault. This is now written into
env->pregs[PR_EDA] instead.

Signed-off-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>